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    Dashboard / CVE / CVE-2021-25662

    CVE-2021-25662

    A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4). SmartVNC client fails to handle an exception properly if the program execution process is modified after sending a packet from the server, which could result in a Denial-of-Service condition.

    Published:May 12, 2021
    Last Modified:Jun 2, 2026
    EPS:May 12, 2021
    EPSS Score:0.0074
    CVSS Score:7.5

    Affected Products

    Vendor
    Siemens
    Product
    Simatic Hmi Comfort Outdoor Panels 15\"
    Vendor
    Siemens
    Product
    Simatic Hmi Comfort Outdoor Panels 15\" Firmware
    Vendor
    Siemens
    Product
    Simatic Hmi Comfort Outdoor Panels 7\"
    Vendor
    Siemens
    Product
    Simatic Hmi Comfort Outdoor Panels 7\" Firmware
    Vendor
    Siemens
    Product
    Simatic Hmi Comfort Panels 22\"
    Vendor
    Siemens
    Product
    Simatic Hmi Comfort Panels 22\" Firmware
    Vendor
    Siemens
    Product
    Simatic Hmi Comfort Panels 4\"
    Vendor
    Siemens
    Product
    Simatic Hmi Comfort Panels 4\" Firmware
    Vendor
    Siemens
    Product
    Simatic Hmi Ktp Mobile Panels Ktp400f
    Vendor
    Siemens
    Product
    Simatic Hmi Ktp Mobile Panels Ktp400f Firmware
    Vendor
    Siemens
    Product
    Simatic Hmi Ktp Mobile Panels Ktp700
    Vendor
    Siemens
    Product
    Simatic Hmi Ktp Mobile Panels Ktp700 Firmware
    Vendor
    Siemens
    Product
    Simatic Hmi Ktp Mobile Panels Ktp700f
    Vendor
    Siemens
    Product
    Simatic Hmi Ktp Mobile Panels Ktp700f Firmware
    Vendor
    Siemens
    Product
    Simatic Hmi Ktp Mobile Panels Ktp900
    Vendor
    Siemens
    Product
    Simatic Hmi Ktp Mobile Panels Ktp900 Firmware
    Vendor
    Siemens
    Product
    Simatic Hmi Ktp Mobile Panels Ktp900f
    Vendor
    Siemens
    Product
    Simatic Hmi Ktp Mobile Panels Ktp900f Firmware
    Vendor
    Siemens
    Product
    Simatic Wincc Runtime Advanced

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2021-27385 (CVSS 7.5) — A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variant…
    CVE-2021-27386 (CVSS 7.5) — A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variant…
    CVE-2021-25661 (CVSS 7.5) — A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variant…
    CVE-2021-27383 (CVSS 7.5) — A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variant…
    CVE-2021-27384 (CVSS 9.8) — A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variant…
    CVE-2021-25660 (CVSS 7.5) — A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variant…
    CVE-2019-10936 (CVSS 7.5) — Affected devices improperly handle large amounts of specially crafted UDP packets. This could allow an unau…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High